Hook for hanging plastic vent pipes



FIG. 1 is a side elevational view of a hook for hanging plastic vent pipes showing my new design, an opposite view being a mirror image thereof;

The respective top and bottom views of FIG. 1 are plain and unornamented;

FIG. 2 is a side elevational view of a hook for hanging plastic vent pipes showing a second embodiment of my new design, an opposite view being a mirror image thereof;

The respective top and bottom views of FIG. 2 are plain and unornamented; and,

FIG. 3 is a view similar to FIG. 1 with dotted lines to indicate the environment in which this hook is used, said dotted lines showing a building component to which the hook is attached and a vent pipe supported by a resilient cord which is secured to said hook, said dotted line showings being for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a hook for hanging plastic vent pipes, and shown and described. 